It followed an opening day victory over Edinburgh, while a trip to Munster again saw Danny Wilson's side finishing on the right side of a narrow victory, 24-23. Alex Cuthbert crossed after just 23 minutes for the Welsh region against the Warriors, with Rey Lee-Lo touching down at the end of the first half, both converted by Gareth Anscombe.
And after Anscombe and Steven Shingler added a further three penalties, the win was sealed for Blues, although Williams believes there are still tough tests to come.
"When we attack well, which we have done so far this season and over the past 12 months, we're a tough team to defend against," said Williams. "The way we played our game is where we want to be - playing an attractive style of rugby.
We enjoy playing like that and hopefully the crowd enjoy it." "From the tail-end of last season, we really came together and believed we could go out and beat anyone. Last year we came alive in the last 20 minutes because we knew if we had a team against the ropes after 60 minutes, we've got a chance."
"It is a nice place to be, but it's still early days. We're three games down in what is a very long season.
"We don't want to get ahead of ourselves. We haven't won out in Zebre for three years, so next week is a big week for us. We really want a result out there."
Guinness PRO12 Final 2017 Ticket Information: Fans can save up to 20% on selected tickets, and prices start at just €30 adults and €5 child, and be booked via www.ticketmaster.ie. For further information visit http://www.pro12rugby.com/final
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